The rate of reaction triples when temperature change from `20^@C` to `50^@C`. Calculate the energy of activation. `(R = 8.314 Jmol^-1K^-1)`

The rate of reaction quadruples when the temperature changes from 293 K to 313 K. Calculate the energy of activation of the reaction assuming that it does not change with temperature.

In general it is observed that the rate of a chemical reaction doubles with every 10^@ rise in temperature. If the generalisation holds for a reaction in the temperature range 295K to 305K, what would be the value of activation energy for the reaction?

The rate constant of reaction is 1.5xx10^7s^-1 at 50^@C and 4.5xx10^7s^-1 at 100^@C . Calculate the value of activation energy for the energy for the reaction (R = 8.314 Jk^-1 mol^-1)

Calculate the entropy change when 50 gm water changes the temperature from 0^@C to 40^@C .

The rate constant for the decomposition of a hydrocarbon is 2.418xx10^-5 s^-1 at 546 K. If the energy of activation is 179.9 KJ mol^-1 , What will be the value of pre-exponential factor?

Three moles of an ideal gas at a constant temperature of 300 K is compressed from a volume of 4 litres to 1 litre. Calculate the work done in the process. Given R=8.31 Jmol^-1K^-1 .

A certain reaction is 50% complete in 20 minutes at 300K and the same reaction is again 50% complete in 5 minutes at 350K. Calculate the activation energy if the reaction is of first order.

A certain reaction is 50% complete in 20 minutes at 300K and the same reaction is again 50% complete in 5 mins at 350K. Calculate the activation energy if the reaction is of first order.

The rate of the chemical reaction doubles for an increase of 10 K in absolute temperature from 298 K. Calculate E_a .

The temperature of a black body increases from 7°C to 287°C .The rate of energy radiation increases by